Which Rigomor gear should I craft?
Vermillion (Balance): A damage set that is worse than Crimson; therefore, it’s nyot recommended to craft.

Crimson (Extreme): The best and most consistent set for DPS classes. The damage taken increase is nyaegligible for most content.

Cerulean (Accelerate): Great on classes dependant on one or two heavy-hitting skills with high cooldowns and rest skills in rotation being significantly weaker (e.g. Shakti, Liberator), but nyot worth on those whose key skills need special resources to be cast (e.g. Apsara, Catastrophe), because they're nyot possible to be recast right after a cooldown reset. The more similarly powerful skills mew have, the worse the resets become as in you're able to rotate your skills with little to nyu fillers.

Nyot crafting Crimson will lead to a huge Polarize loss - therefore, Mew may need to put in extra investment to DPS. Polarize sources include various accessories, Ice Burner sets, Yellow Artifact Rings, and Synergy. This will pay off if mew plan to reach the endgame and upgrade to Tenebrous armor.

Cerulean can be used for fun even if mew don’t want to invest that much into the game. However, your damage can suffer depending on how many skill resets mew get. It's a high-risk, high-reward set because your damage is ultimately dependent on RNG gods.

Keep in mind that this set is indirectly nerfed by high Cooldown Reduction and Acceleration in parties where mew can literally tap 2 buttons as you're losing damage in the long run.

While this set is nyot recommended to take over Sage, it can also be used with support classes whose skills have long cooldown and low uptime.

This set only appears to be very MP friendly due to its MPR effect, but more skill resets lead to more MP being consumed.

Lower CP compared to Crimson/Sage.

Cobalt (Amplify): Provides worse damage than the other sets in end-game and is more expensive.

Sage (Support): Primarily for support classes. This set works right out of the box and doesn't need further investment. Unless you play classes whose buffs scale off CP (AeS, MtM, BL, RaS, NP), crafting this as your primary set is unnecessary. Despite this set being worse than Crimson for DPSing purposes because the effects of this set don't stack, its effects can potentially be stronger than Crimson's for solo play. Keep in mind that only real major downside of this set is that you potentially lose 18% + - damage if someone else already has Sage set in the party. Many people don't run Sage in dungeons, making it a pretty solid choice for an EXP set as well.

Violet (Compete): A set designed for PvP. However, It's highly recommended to dump your resources into Duelist set if you want to PvP instead as it's stronger and mew can get it for free via Quest.

Best to worst for DPSing:

Crimson (due to its consistency) > Cerulean (depends on class, less consistant than Crimson, either for fun or if mew plan to invest deeply into the endgame) > Vermillion > Cobalt. Sage's viability depends purely on whether someone else is running the set in the party already or nyot, as its effects don't stack.

Best to worst for Support:

Sage (highly recommended mew to not invest further than r0 on classes different than AeS, MtM, BL, RaS, NP. On other classes you can just safely craft the base version and use it whenever necessary) > Cerulean (once again, moreso class dependant, don't craft it if your class doesn't make use of it) > DPS sets